Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· On-line Data
· References in the article
· Citations to the Article (18) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (8)
· Reads History
·
· Translate This Page
Title:
The luminosity of the double-mode Cepheid Y Carinae
Authors:
Evans, Nancy R.
Affiliation:
AA(York University, North York, Canada; Computer Sciences Corp., Silver Spring, MD)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 385, Feb. 1, 1992, p. 680-684. Research supported by NSERC. (ApJ Homepage)
Publication Date:
02/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Cepheid Variables, Companion Stars, Stellar Luminosity, Stellar Oscillations, Stellar Spectra, Ultraviolet Astronomy, Hertzsprung-Russell Diagram, Iue
DOI:
10.1086/170974
Bibliographic Code:
1992ApJ...385..680E

Abstract

IUE spectra of the double-mode Cepheid Y Carinae have been used to determine the spectral type of the binary companion. From the companion spectral type (B9.O V), the absolute magnitude of the Cepheid is found to be -2.94 mag, with an estimated uncertainty of +/-0.3. This luminosity is in good agreement with that from the period-luminosity-color relation of Feast and Walker for the fundamental mode. This agreement, together with the large magnitude difference between the B9.0 V star and the Cepheid, confirm that the Cepheid is a normal classical Cepheid with a mass much larger than that inferred from the ratio of the two periods (beat mass). The two double-mode Cepheids with independently determined luminosities (Y Car and V 367 Sct) both fall on the blue edge of the instability strip.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints